Samsung smart tv ES8000 remote control via computer?

I have a Samsung ES8000 smart tv. I know there are remote control apps that enable users to use their phones and tablets to control the tv. I was wondering if there is a similar app for computers? I have an old PowerBook mac, and would love to use it to turn on/off my cable box, and switch channels using my comp (it has bluetooth). Is there an app that allows this?